CN111384980B

CN111384980B - Mobile terminal, chip and communication method thereof for communication based on unauthorized frequency band

Info

Publication number: CN111384980B
Application number: CN201811643317.1A
Authority: CN
Inventors: 倪观军; 朱宇洪
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2021-10-26
Anticipated expiration: 2038-12-29
Also published as: CN111384980A

Abstract

The application provides a mobile terminal, a chip and a communication method thereof for communication based on an unauthorized frequency band. The mobile terminal includes: the device comprises a control chip, a first radio frequency channel and a second radio frequency channel; the first radio frequency path and the second radio frequency path are both electrically connected with the control chip; the first radio frequency channel supports a first unauthorized frequency band, and the second radio frequency channel supports a second unauthorized frequency band; the control chip is used for selecting a second radio frequency channel to communicate with the opposite terminal equipment according to the first representation information; the first representation information is used for representing that the interference of the first unauthorized frequency band is greater than an interference threshold, and/or the interference of the second unauthorized frequency band is less than the interference threshold; and the control chip is also used for communicating with the opposite terminal equipment in a second unauthorized frequency band. The method and the device can realize selection of the low-interference frequency point in the communication process, and improve the reliability of communication.

Description

Mobile terminal, chip and communication method thereof for communication based on unauthorized frequency band

Technical Field

The present application relates to the field of communications technologies, and in particular, to a terminal device, a chip, and a communication method thereof for performing communication based on an unlicensed frequency band.

Background

At present, with the continuous development of communication technology, more and more devices working in unlicensed (unlicensed) frequency band are available. The devices operating in the unlicensed frequency band may include, for example, devices supporting Bluetooth (Bluetooth) technology, devices supporting Wireless Fidelity (WiFi) technology, devices supporting zigbee (Wireless Fidelity) technology, and the like.

In the prior art, devices operate in a fixed unlicensed frequency band, and when a large number of devices operate in the unlicensed frequency band, the devices may generate large interference with each other. Currently, the impact of interference on the transmission can be reduced by Frequency Hopping (FH) techniques. Specifically, the device working in the unlicensed frequency band can select a frequency point in the unlicensed frequency band for transmission according to the frequency hopping sequence, so that the problem of large interference when the device fixedly uses a certain frequency point with large interference for transmission is avoided.

However, in the prior art, the problem that the low-interference frequency point cannot be effectively selected by adopting the frequency hopping technology exists.

Disclosure of Invention

The application provides a terminal device, a chip and a communication method thereof for communication based on an unauthorized frequency band, which are used for solving the problem that a low-interference frequency point cannot be effectively selected by adopting a frequency hopping technology in the prior art.

In a first aspect, an embodiment of the present application provides a terminal device for performing communication based on an unlicensed frequency band, including: the device comprises a control chip, a first radio frequency channel and a second radio frequency channel; the first radio frequency path and the second radio frequency path are both electrically connected with the control chip. The first radio frequency channel supports a first unlicensed frequency band, and the second radio frequency channel supports a second unlicensed frequency band; the control chip is used for selecting a second radio frequency channel to communicate with the opposite terminal equipment according to the first representation information; the first representation information is used for representing that the interference of the first unauthorized frequency band is greater than an interference threshold, and/or the interference of the second unauthorized frequency band is less than the interference threshold; and the control chip is also used for communicating with the opposite terminal equipment in a second unauthorized frequency band.

In the above scheme, the control chip selects to use the second radio frequency channel to communicate with the opposite terminal device in the second unlicensed frequency band according to the first characterization information for characterizing that the interference of the first unlicensed frequency band is greater than the interference threshold, and/or the interference of the second unlicensed frequency band is smaller than the first characterization information of the interference threshold, so that when the overall interference of the first unlicensed frequency band is serious, and/or when the overall interference of the second unlicensed frequency band is small, the second unlicensed frequency band is used to communicate with the opposite terminal device, thereby avoiding the problem that when the overall interference of the first unlicensed frequency band is serious, the terminal device communicates with the opposite terminal device in the first unlicensed frequency band by using a frequency hopping technology, or cannot effectively select a low-interference frequency point, and improving the reliability of communication.

In one possible implementation, the first characterization information includes: first interference information of a frequency point in a first unauthorized frequency band and/or second interference information of a frequency point in a second unauthorized frequency band; the first interference information indicates that the interference is greater than an interference threshold, and the second interference information indicates that the interference is less than the interference threshold.

In the above scheme, it can be characterized that the interference of the first unlicensed frequency band is greater than the interference threshold by that the first interference information of the frequency point in the first unlicensed frequency band is greater than the interference threshold, and it can be characterized that the interference of the second unlicensed frequency band is less than the interference threshold by that the second interference information of the frequency point in the second unlicensed frequency band is less than the interference threshold.

In one possible implementation, the type of the first interference information and the second interference information includes any one of:

interference signal strength, packet error rate, retransmission rate, or signal-to-noise ratio.

In one possible implementation, the first characterization information includes: the position of the terminal device is located in the target area.

In the above scheme, the position of the terminal device is located in the target area, which indicates that the interference of the first unlicensed frequency band is greater than the interference threshold, and the interference of the second unlicensed frequency band is less than the interference threshold.

In one possible implementation, the first characterization information includes: the number of the devices searched by the terminal device in the first unlicensed frequency band is greater than the number threshold.

In the above scheme, the number of devices searched by the terminal device in the first unlicensed frequency band is greater than the number threshold, which indicates that the interference of the first unlicensed frequency band is greater than the interference threshold, and the interference of the second unlicensed frequency band is less than the interference threshold.

In a possible implementation, the control chip is configured to select a second radio frequency path to communicate with the peer device according to the first characterization information, and specifically includes: in the process of using the first radio frequency path to communicate with the opposite terminal equipment, selecting a second radio frequency path to communicate with the opposite terminal equipment according to the first representation information;

and the control chip is also used for negotiating with opposite terminal equipment and switching the communication frequency band from the first unauthorized frequency band to the second unauthorized frequency band.

In a possible implementation, the control chip is configured to negotiate with an opposite end device, and switch a communication frequency band from a first unlicensed frequency band to a second unlicensed frequency band, and specifically includes: in the process of communicating with the opposite terminal equipment by using the first radio frequency path, negotiating with the opposite terminal equipment and switching to communicate with the opposite terminal equipment by using a second unauthorized frequency band at a later target moment;

the control chip is used for communicating with the opposite terminal device in a second unauthorized frequency band, and specifically comprises:

and starting from the target moment, communicating with the opposite terminal equipment in the second unlicensed frequency band.

In a possible implementation, the control chip is further configured to select a first radio frequency path to communicate with the peer device according to the second characterization information; the second representation information is used for representing that the interference of the first unlicensed frequency band is smaller than an interference threshold;

and the control chip is also used for communicating with the opposite terminal equipment in the first unauthorized frequency band.

In the above scheme, the first radio frequency path is selected to communicate with the opposite terminal device according to the second characterization information used for characterizing that the interference of the first unlicensed frequency band is smaller than the interference threshold, so that the second unlicensed frequency band is preferentially used for communication.

In one possible implementation, the control chip includes a communication protocol chip and a selection circuit; the first radio frequency path, the second radio frequency path and the communication protocol chip are electrically connected with the selection circuit;

the communication protocol chip is used for controlling the selection circuit according to the first representation information;

the selection circuit is used for selecting the second radio frequency path to be electrically connected with the communication protocol chip according to the control of the communication protocol chip;

and the communication protocol chip is also used for communicating with the opposite terminal equipment in a second unauthorized frequency band.

In one possible implementation, the first unlicensed frequency band is a 2.4 gigahertz (GHz) unlicensed frequency band, and the second unlicensed frequency band is a non-2.4 GHz unlicensed frequency band.

In one possible implementation, the second unlicensed frequency band is any one of the following: an unlicensed band of 5GHz, an unlicensed band of 60GHz, or an unlicensed band of 900 MHz.

In one possible implementation, the communication protocol supported by the control chip is bluetooth.

In a second aspect, an embodiment of the present application provides a chip for performing communication based on an unlicensed frequency band, including: a processor and an interface;

the interface is used for receiving the code instruction and transmitting the code instruction to the processor;

the processor executes the code instructions to perform the steps of:

selecting a second radio frequency path from the first radio frequency path and the second radio frequency path to communicate with opposite terminal equipment according to the first characterization information; the first representation information is used for representing that the interference of the first unauthorized frequency band is greater than an interference threshold, and/or the interference of the second unauthorized frequency band is less than the interference threshold; the first radio frequency path supports a first unlicensed frequency band, and the second radio frequency path supports a second unlicensed frequency band;

and communicating with the opposite terminal equipment in the second unlicensed frequency band.

In one possible implementation, the first characterization information includes: first interference information of a frequency point in a first unauthorized frequency band and/or second interference information of a frequency point in a second unauthorized frequency band; when the first interference information indicates that the interference is greater than the interference threshold, the second interference information indicates that the interference is less than the interference threshold.

In one possible implementation, the first characterization information includes that the location where the terminal device is located in the target area.

In a possible implementation, the first characterizing information includes that the number of devices searched by the terminal device in the first unlicensed frequency band is greater than a number threshold.

In a possible implementation, the processor is configured to select, according to the first characterization information, a second radio frequency path to communicate with the peer device, and specifically includes:

in the process of using the first radio frequency path to communicate with the opposite terminal equipment, the second radio frequency path is selected to communicate with the opposite terminal equipment according to the first representation information and the control chip;

the processor is further configured to: and negotiating with opposite terminal equipment, and switching the communication frequency band from the first unauthorized frequency band to a second unauthorized frequency band.

In a possible implementation, the processor is configured to negotiate with an opposite end device, and switch a communication frequency band from a first unlicensed frequency band to a second unlicensed frequency band, and specifically includes:

in the process of communicating with the opposite terminal equipment by using the first radio frequency path, negotiating with the opposite terminal equipment and switching to communicate with the opposite terminal equipment by using a second unauthorized frequency band at a later target moment;

the processor is configured to communicate with an opposite terminal device in a second unlicensed frequency band, and specifically includes:

In one possible implementation, the processor is further configured to:

selecting a first radio frequency channel to communicate with opposite terminal equipment according to the second characterization information; the second representation information is used for representing that the interference of the first unlicensed frequency band is smaller than an interference threshold;

and communicating with the opposite terminal equipment in the first unlicensed frequency band.

In a possible implementation, the processor is configured to communicate with a peer device, and specifically includes:

and the Bluetooth communication protocol is adopted, and the opposite terminal equipment carries out communication.

In a third aspect, an embodiment of the present application provides a communication method for performing communication based on an unlicensed frequency band, where the communication method is applied to a terminal device, and the method includes:

In one possible implementation, selecting a second radio frequency path to communicate with a peer device according to the first characterization information includes:

the method further comprises the following steps: and negotiating with opposite terminal equipment, and switching the communication frequency band from the first unauthorized frequency band to a second unauthorized frequency band.

In one possible implementation, negotiating with an opposite end device, and switching a communication frequency band from a first unlicensed frequency band to a second unlicensed frequency band includes:

in a second unlicensed frequency band, communicating with an opposite terminal device, including:

In a possible implementation, after communicating with the peer device in the second unlicensed frequency band, the method further includes:

In one possible implementation, communicating with a peer device includes:

In a fourth aspect, embodiments of the present application provide a computer storage medium for storing a computer program or instructions, which when run in a computer, causes the computer to perform the method of the third aspect.

In a fifth aspect, the present application provides a computer program product, which includes a program that, when executed, causes the method of the third aspect to be performed.

Drawings

Fig. 1A to fig. 1C are schematic views of application scenarios according to embodiments of the present application;

fig. 1D and fig. 1E are schematic diagrams of frequency bands according to an embodiment of the present application;

fig. 2A and 2B are schematic diagrams illustrating frequency hopping of a bluetooth device in the related art;

fig. 3 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a chip for performing communication based on an unlicensed frequency band according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a communication method for communication based on an unlicensed frequency band according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to another embodiment of the present application.

Detailed Description

Fig. 1A is a schematic view of an application scenario one according to an embodiment of the present application. As shown in fig. 1A, the application scenario may include: terminal device 1 and terminal device 2. Terminal device 1 and terminal device 2 may communicate based on the unlicensed frequency band. Here, terminal device 1 may be understood as a peer device to terminal device 2, and terminal device 2 may be understood as a peer device to terminal device 1.

It should be noted that fig. 1A takes an application scenario including two terminal devices as an example, and the application scenario of the embodiment of the present application may include more than 2 terminal devices. Optionally, as shown in fig. 1B, the application scenario may include: terminal device 1, terminal device 2, and terminal device 3. The terminal device 1 and the terminal device 2 may communicate based on an unlicensed frequency band, and the terminal device 1 and the terminal device 3 may also communicate based on the unlicensed frequency band. Here, terminal device 1 may be understood as a device opposite to terminal device 2 and terminal device 3, and terminal device 2 and terminal device 3 may be understood as a device opposite to terminal device 1.

Optionally, as shown in fig. 1C, the application scenario may include: terminal device 1, terminal device 2, and terminal device 3. The terminal device 1 and the terminal device 2 may communicate based on an unlicensed frequency band, and the terminal device 2 and the terminal device 3 may also communicate based on the unlicensed frequency band. Here, the terminal device 2 may be understood as a device opposite to the terminal device 1 and the terminal device 3, and the terminal device 1 and the terminal device 3 may be understood as a device opposite to the terminal device 2.

The terminal devices (e.g., terminal device 1 and terminal device 2) may also be referred to as terminal devices, and may specifically be any device having image acquisition and display capabilities, and may include, but are not limited to, a user terminal device (CPE), a smart phone (e.g., an Android phone, an IOS phone, etc.), a multimedia device, a streaming media device, a personal computer, a tablet computer, a smart watch, a smart speaker with a screen, a robot with a screen, an electronic conference device (e.g., an electronic whiteboard) palm computer, a Mobile Internet Device (MID), a wearable smart device, an internet device such as a vehicle-mounted device, and the like.

It should be noted that, the present application may not be limited to a communication protocol used when performing communication between terminal devices based on an unlicensed frequency band. For example, it may be a bluetooth protocol, etc. Optionally, when the communication protocol is a bluetooth protocol, the terminal device 1 in fig. 1A may specifically be a mobile phone supporting a bluetooth function, and the terminal device 2 may specifically be a bluetooth headset. When the communication protocol is a bluetooth protocol, the terminal devices in fig. 1B and 1C may be specifically mobile phones supporting a bluetooth function, and the terminal devices 2 and 3 may be specifically bluetooth headsets, that is, one mobile phone may connect two bluetooth headsets.

Hereinafter, taking a bluetooth protocol as an example, an application scenario of the embodiment of the present application is specifically described, and a terminal device that performs communication by using the bluetooth protocol may be referred to as a bluetooth device.

At present, all bluetooth devices communicate based on the unlicensed frequency band of 2.4 gigahertz (GHz), and the bluetooth devices can perform frequency hopping in the unlicensed frequency band of 2.4GHz to select low-interference frequency points, so that the problem of large interference when the devices fixedly use a certain frequency point with large interference for transmission is avoided.

First, when the bluetooth device performs frequency hopping, fixed pattern frequency hopping may be used, and when the bluetooth device and a Wireless Local Area Network (WLAN) device both use an unlicensed frequency band of 2.4GHz, and when 2.402GHz to 2.480GHz, the specific frequency hopping manner in which the bluetooth device performs fixed pattern frequency hopping in the unlicensed frequency band may be as shown in fig. 2A. As can be seen from fig. 2A, when the bluetooth device adopts the frequency hopping mode of fixed pattern frequency hopping, there is a problem that the selected frequency point conflicts with the frequency points used by other devices.

Therefore, in addition to the fixed pattern Frequency Hopping, a Frequency Hopping method of Adaptive Frequency Hopping (AFH) has been proposed in the related art. In both a bluetooth device and a Wireless Local Area Network (WLAN) device, an unlicensed frequency band of 2.4GHz is used, and when 2.402GHz to 2.480GHz, the specific frequency hopping manner in which the bluetooth device employs adaptive frequency hopping within the unlicensed frequency band may be as shown in fig. 2B. As can be seen from fig. 2B, when the bluetooth device adopts the frequency hopping mode of adaptive frequency hopping, the problem that the selected frequency point conflicts with the frequency points used by other devices can be avoided.

Under a common condition, when the Bluetooth device communicates in an unlicensed frequency band of 2.4GHz by adopting self-adaptive frequency hopping, a low-interference frequency point can be selected. However, in some special cases, when the overall interference of the unlicensed band of 2.4GHz is serious, the bluetooth device cannot select a low-interference frequency point even if it uses adaptive frequency hopping for communication. The terminal device, the chip and the communication method thereof provided by the embodiment of the application can be mainly applied to the serious overall interference of the 2.4GHz unlicensed frequency band, and the frequency hopping mode in the related technology can not select the special scene of the low interference frequency point.

In the embodiment of the application, when the overall interference of the first unauthorized frequency band is serious, the terminal device 1 and the terminal device 2 use the second unauthorized frequency band to communicate, specifically, communicate in the second unauthorized frequency band, so that the problem that when the overall interference of the first unauthorized frequency band is serious, the communication in the first unauthorized frequency band cannot effectively select the low interference frequency point is avoided. Here, the first unlicensed frequency band may be understood as a default unlicensed frequency band used when the terminal device 1 and the terminal device 2 communicate with each other, a higher-priority unlicensed frequency band, an unlicensed frequency band used by most terminal devices, a most mature unlicensed frequency band, or the like. The second unlicensed frequency band can be understood as a newly added unlicensed frequency band, an unlicensed frequency band with a lower usage rate, an immature unlicensed frequency band, or the like.

It should be noted that the first unlicensed frequency band and the second unlicensed frequency band are different unlicensed frequency bands. Optionally, the first unlicensed frequency band may be a 2.4GHz unlicensed frequency band, and the second frequency band may be a non-2.4 GHz unlicensed frequency band. Further optionally, the second unlicensed frequency band may be any one of the following: an unlicensed band of 5GHz, an unlicensed band of 60GHz, or an unlicensed band of 900 MHz. The relationship among the 900MHz frequency band, the 2.4GHz frequency band, the 5GHz frequency band, and the 60GHz frequency band may be as shown in fig. 1D, and the frequency ranges of the 900MHz frequency band, the 2.4GHz frequency band, the 5GHz frequency band, and the 60GHz frequency band may be as shown in fig. 1E. As shown in fig. 1E, the band marked by the dashed line in the 5G band is a band that is being evaluated in the art and is soon unlicensed, that is, the 5G band also includes unlicensed band.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 3 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to an embodiment of the present application, where the terminal device may be, for example, the terminal device 1, the terminal device 2, or the terminal device 3. As shown in fig. 3, the terminal device 30 may include: a control chip 31, a first radio frequency path 32 and a second radio frequency path 33; the first rf path 32 and the second rf path 33 are both electrically connected to the control chip 31.

Wherein the first radio frequency path 32 supports a first unlicensed frequency band, and the second radio frequency path 33 supports a second unlicensed frequency band;

the control chip 31 is configured to select the second radio frequency path 33 to communicate with an opposite terminal device according to the first characterization information; the first characterization information is used for characterizing that the interference of the first unlicensed frequency band is greater than an interference threshold, and/or the interference of the second unlicensed frequency band is less than the interference threshold;

the control chip 31 is further configured to communicate with the peer device in the second unlicensed frequency band.

Optionally, the first rf path 32 and the second rf path 33 may multiplex a set of rf resources in a time-sharing manner, or the first rf path 32 and the second rf path 33 may use a set of rf resources respectively. The radio frequency path may include a radio frequency chip, a Low Noise Amplifier (LNA), a Power Amplifier (PA), and the like. The terminal device 1 and the terminal device 2 may use the first radio frequency path 32 to communicate on the first unlicensed frequency band; alternatively, the terminal device 1 and the terminal device 2 may use the second radio frequency path 33, and communicate on the second unlicensed frequency band, and may communicate with the peer device. Optionally, the first unlicensed frequency band may be an unlicensed frequency band that is used by default when the terminal device 1 and the terminal device 2 perform communication.

Optionally, the terminal device may select the second radio frequency path 33 to communicate with the peer device when the interference of the first unlicensed frequency band is greater than the interference threshold and/or the interference of the second unlicensed frequency band is less than the interference threshold. That is, the terminal device may select the second radio frequency path 33 to communicate with the peer device when the interference of the first unlicensed frequency band is greater than the interference threshold; or, the terminal device may select the second radio frequency path 33 to communicate with the peer device when the interference of the second unlicensed frequency band is smaller than the interference threshold; or, the terminal device may select the second radio frequency path 33 to communicate with the peer device when the interference of the first unlicensed frequency band is greater than the interference threshold and the interference of the second unlicensed frequency band is less than the interference threshold.

Optionally, the second unlicensed frequency band may be selected before the terminal device establishes the communication connection.

Further optionally, as shown in fig. 1A and 1C, before the terminal device 1 establishes a communication connection with the terminal device 2, it may select to use the second radio frequency path 32 to communicate on the second unlicensed frequency band according to the acquired first characterizing information; similarly, before establishing a communication connection with the terminal device 1, the terminal device 2 may select to use the second radio frequency channel 32 to communicate on the second unlicensed frequency band according to the acquired first characterizing information. Further, the terminal device 1 and the terminal device 2 may establish a communication connection based on the second unlicensed frequency band and perform communication. Taking terminal device 1 as the device initiating the connection as an example, terminal device 1 may page terminal device 2 in the second unlicensed frequency band, terminal device 2 may receive the paging in the second unlicensed frequency band, and when receiving the paging of terminal device to it, it responds to the paging of terminal device 1, thereby establishing the communication connection.

Here, it is taken as an example that both the terminal device 1 and the terminal device 2 select the unlicensed frequency band, and the unlicensed frequency bands selected by the terminal device 1 and the terminal device 2 are the same and are both the second unlicensed frequency band. If the terminal device 1 and the terminal device 2 both select the unlicensed frequency band and the selected unlicensed frequency bands are different (for example, the terminal device 1 selects the second unlicensed frequency band and the terminal device 2 selects the first unlicensed frequency band), the device initiating the connection may page the opposite-end device for a period of time on the unlicensed frequency band selected by the device initiating the connection, but after the opposite-end device is unsuccessfully paged, the device initiating the connection may switch to paging the opposite-end device on the unlicensed frequency band which is not selected, and the device receiving the connection always receives the paging on the unlicensed frequency band selected by the device receiving the connection; alternatively, the device initiating the connection may always page the opposite device on the unlicensed frequency band selected by the device, and the device receiving the connection may receive the connection on the unlicensed frequency band selected by the device for a period of time, but may switch to receiving the paging on the unlicensed frequency band not selected after the paging is not successfully received.

For example, if the terminal device 1 selects the second unlicensed frequency band, the terminal device 2 selects the first unlicensed frequency band, and the terminal device 1 is a device initiating connection with the terminal device 2, the terminal device 1 may page the terminal device 2 on the second unlicensed frequency band for a period of time, but may switch to paging the terminal device 2 on the first unlicensed frequency band after the terminal device 2 is unsuccessfully paged, and the terminal device 2 always receives paging on the first unlicensed frequency band; alternatively, the terminal device 1 may always page the terminal device 2 on the second unlicensed frequency band, and the terminal device 2 may receive the page on the first unlicensed frequency band for a period of time, but may switch to receive the page on the second unlicensed frequency band after the page is not successfully received.

Alternatively, the unlicensed frequency band may be selected by only one of the terminal device 1 and the terminal device 2. Further optionally, the unlicensed frequency band may be selected by a device initiating connection between the terminal device 1 and the terminal device 2. Taking the example that the terminal device 1 initiates the connection and the terminal device 1 selects the second unlicensed frequency band, the terminal device 1 may page the terminal device 2 in the second unlicensed frequency band, the terminal device 2 may receive a period of time in the first unlicensed frequency band, and if no paging is received, the terminal device switches to the second unlicensed frequency band to receive the paging, thereby establishing the communication connection.

It should be noted that, for the specific manner in which the terminal device 2 and the terminal device 3 in fig. 1C select the unlicensed frequency band for communication before establishing the communication connection, the specific manner is similar to the specific manner in which the terminal device 1 and the terminal device 2 in fig. 1A and 1C select the unlicensed frequency band for communication before establishing the communication connection, and details are not repeated here.

Optionally, as shown in fig. 1B, before the terminal device 1 establishes a communication connection with the terminal device 2 and the terminal device 3, the terminal device may select to use the second radio frequency path 32 to communicate on the second unlicensed frequency band according to the acquired first characterizing information; similarly, before establishing a communication connection with the terminal device 1, the terminal device 2 may select to use the second radio frequency channel 32 to communicate on the second unlicensed frequency band according to the acquired first characterization information; similarly, before establishing a communication connection with the terminal device 1, the terminal device 3 may select to use the second radio frequency channel 32 to communicate on the second unlicensed frequency band according to the acquired first characterizing information. Further, the terminal device 1, the terminal device 2, and the terminal device 3 may establish a communication connection based on the second unlicensed frequency band, and perform communication. Taking terminal device 1 as a device initiating a connection as an example, terminal device 1 may page terminal device 2 and terminal device 3 in the second unlicensed frequency band, and terminal device 2 and terminal device 3 may receive a page in the second unlicensed frequency band, and respond to the page of terminal device 1 after receiving the page of terminal device to establish a communication connection.

Here, it is taken as an example that the terminal device 1, the terminal device 2, and the terminal device 3 all select the unlicensed frequency band, and the unlicensed frequency bands selected by the terminal device 1, the terminal device 2, and the terminal device 3 are the same and are all the third unlicensed frequency band. If the terminal device 1, the terminal device 2, and the terminal device 3 all select the unlicensed frequency band, and the selected unlicensed frequency bands are different (for example, the terminal device 1 selects the second unlicensed frequency band, and the terminal device 2 and the terminal device 3 select the first unlicensed frequency band), the device initiating the connection may page the opposite-end device for a period of time on the unlicensed frequency band selected by the device initiating the connection, but after the opposite-end device is not successfully paged, the device initiating the connection may be switched to page the opposite-end device on the unlicensed frequency band not selected, and the device receiving the connection always receives the paging on the unlicensed frequency band selected by the device receiving the connection; alternatively, the device initiating the connection may always page the opposite device on the unlicensed frequency band selected by the device, and the device receiving the connection may receive the connection on the unlicensed frequency band selected by the device for a period of time, but may switch to receiving the paging on the unlicensed frequency band not selected after the paging is not successfully received.

For example, if the terminal device 1 selects the second unlicensed frequency band, the terminal device 2 selects the first unlicensed frequency band, the terminal device 3 selects the second unlicensed frequency band, and the terminal device 1 is a device that initiates connection between the terminal device 2 and the terminal device 2, the terminal device 1 may page the terminal device 2 for a period of time on the second unlicensed frequency band, but after the terminal device 2 is unsuccessfully paged, the terminal device 2 may be paged on the first unlicensed frequency band by switching, the terminal device 1 may page the terminal device 3 on the second unlicensed frequency band, the terminal device 2 may receive paging on the first unlicensed frequency band all the time, and the terminal device 3 may receive paging on the second unlicensed frequency band all the time; alternatively, the terminal device 1 may always page the terminal device 2 on the second unlicensed frequency band, the terminal device 2 may receive the page on the first unlicensed frequency band for a period of time, but after the page is not successfully received, the terminal device may switch to receive the page on the second unlicensed frequency band, and the terminal device 3 may receive the page on the second unlicensed frequency band.

Alternatively, the unlicensed frequency band may be selected by only some of the terminal devices 1, 2, and 3. Further optionally, the unlicensed frequency band may be selected by a device initiating connection among the terminal device 1, the terminal device 2, and the terminal device 3. Taking the example that the terminal device 1 initiates a connection and the terminal device 1 selects the second unlicensed frequency band, the terminal device 1 may page the terminal device 2 in the second unlicensed frequency band, the terminal device 2 may receive a period of time in the first unlicensed frequency band, if no paging is received, the terminal device 1 may receive a paging in the second unlicensed frequency band, the terminal device 1 may page the terminal device 3 in the second unlicensed frequency band, the terminal device 3 may receive a period of time in the first unlicensed frequency band, and if no paging is received, the terminal device 1 may switch to the second unlicensed frequency band to receive a paging.

And/or, optionally, after the terminal device establishes a communication connection with the peer device, specifically, in a process of using the first radio frequency chip 32 to communicate with the peer device, the second unlicensed frequency band may be selected.

Further optionally, the control chip 31 is configured to select the second radio frequency path 33 to communicate with an opposite terminal device according to the first characterization information, and specifically includes: in the process of using the first radio frequency path 31 to communicate with the opposite terminal equipment, selecting the second radio frequency path to communicate with the opposite terminal equipment according to the first representation information;

the control chip 31 is further configured to negotiate with the peer device, and switch a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band.

It should be noted that, the specific manner of negotiating between the control chip 31 and the peer device and switching the communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band may not be limited in this application. Optionally, the control chip 31 is configured to negotiate with the peer device, and switch a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band, and specifically includes: and in the process of communicating with the opposite terminal equipment by using the first radio frequency path, negotiating with the opposite terminal equipment and switching to communicate with the opposite terminal equipment by using the second unlicensed frequency band at a later target moment. Correspondingly, the control chip 31 is configured to communicate with the peer device in the second unlicensed frequency band, and specifically includes: and communicating with the opposite terminal equipment in the second unlicensed frequency band from the target moment.

For example, first, the terminal device may send a frequency band switching request (the frequency band switching request may include configuration information such as specific frequency points) to the peer device; then, after receiving the frequency band switching request, the opposite terminal device can send back a confirmation of the frequency band switching request to the terminal device; then, the terminal device may send the time (i.e., the target time) of the appointed frequency band switching to the peer device; finally, the terminal device and the opposite terminal device can switch the frequency band at the appointed time. Alternatively, the terminal device may also send the target time to the peer device in the request for frequency switching.

It can be understood that, before the target time, the communication frequency band between the terminal device and its peer device is a first unlicensed frequency band, and from the target time, the communication frequency band between the terminal device and its peer device is a second unlicensed frequency band.

Optionally, to avoid the problem that communication cannot be performed due to a difference between the unlicensed frequency bands used by the peer device, after the frequency band is switched and data sent by the peer device cannot be received for a certain period of time, the peer device may back to use the first radio frequency channel for communication, or trigger connection reestablishment between the peer device and the first radio frequency channel.

Further optionally, one or more terminal devices in the application scenario may select the second unlicensed frequency band in the process of using the first radio frequency chip 32 to communicate with the peer device. For example, as shown in fig. 1A, in the process of performing communication with the terminal device 2 based on the first unlicensed frequency band, the terminal device 1 may select to use the second radio frequency channel 32 to perform communication on the second unlicensed frequency band according to the acquired first characterizing information; and/or in the process of communicating with the terminal device 1 based on the first unlicensed frequency band, the terminal device 2 may select to use the second radio frequency channel 32 to communicate on the second unlicensed frequency band according to the acquired first characterizing information.

It should be noted that, the first characterization information is used to characterize that the interference of the first unlicensed frequency band is greater than the interference threshold, which may be understood as to characterize that the overall interference of the first unlicensed frequency band is severe, and the first characterization information is used to characterize the interference small interference threshold of the second unlicensed frequency band, which may be understood as to characterize that the overall interference of the second unlicensed frequency band is small. It should be noted that the first characterizing information may specifically be any type of information that can indicate that the overall interference of the first unlicensed frequency band is severe and/or the overall interference of the second unlicensed frequency band is small, which may not be limited in this application.

Optionally, the first characterization information may specifically include: and the first interference information of the frequency point in the first unauthorized frequency band, and/or the second interference information of the frequency point in the second unauthorized frequency band. Wherein the first interference information indicates that interference is greater than an interference threshold, and the second interference information indicates that interference is less than the interference threshold. Specifically, when the first characterizing information is used to characterize that the interference of the first unlicensed frequency band is greater than an interference threshold, the first characterizing information may include first interference information of a frequency point in the first unlicensed frequency band; when the first characterizing information is used to characterize that the interference of the second unlicensed frequency band is smaller than an interference threshold, the first characterizing information may include second interference information of a frequency point in the second unlicensed frequency band.

The specific form of the first interference information and the second interference information may not be limited in the present application. Further optionally, the type of the first interference information and the second interference information includes any one of the following: received signal interference strength indication, packet error rate, retransmission rate, or signal to noise ratio. It should be noted that, for convenience of comparison, the types of the first interference information and the second interference information may be the same.

Taking the strength of the interference signal as an example, optionally, when the strengths of the interference signals of a certain number of frequency points in the first unlicensed frequency band are all greater than the strength threshold, it may be indicated that the interference of the first unlicensed frequency band is greater than the interference threshold. When the strength of the interference signals of a certain number of frequency points in the second unlicensed frequency band is less than or equal to the strength threshold, it may be indicated that the interference of the second unlicensed frequency band is less than the interference threshold. Here, that the interference signal strength of a certain number of frequency points in the first unlicensed frequency band is greater than the strength threshold may be understood as that the first interference information indicates that the interference is greater than the interference threshold. The interference signal strength of a certain number of frequency points in the second unlicensed frequency band is less than or equal to the strength threshold, which may be understood as that the second interference information indicates that the interference is less than the interference threshold. Further optionally, the interference signal strength of the frequency points in the first unlicensed frequency band and the second unlicensed frequency band may be obtained through scanning.

Taking the packet error rate as an example, optionally, when the packet error rate of the first unlicensed frequency band is greater than the packet error rate threshold, it may be indicated that the interference of the first unlicensed frequency band is greater than the interference threshold. When the packet error rate of the second unlicensed frequency band is less than or equal to the packet error rate threshold, it may be indicated that the interference of the second unlicensed frequency band is less than the interference threshold. Here, that the packet error rate of the first unlicensed frequency band is greater than the packet error rate threshold may be understood as that the first interference information indicates that the interference is greater than the interference threshold. The packet error rate of the second unlicensed frequency band is less than or equal to the packet error rate threshold value may be understood as that the second interference information indicates that the interference is less than the interference threshold. Further optionally, the packet error rate of the first unlicensed frequency band and the packet error rate of the second unlicensed frequency band may be obtained by statistics of the packet error rate used by the peer device for feeding back actually received data packets.

Taking the retransmission rate as an example, optionally, when the retransmission rate of the first unlicensed frequency band is greater than the retransmission rate threshold, it may be indicated that the interference of the first unlicensed frequency band is greater than the interference threshold. When the retransmission rate of the second unlicensed frequency band is less than or equal to the retransmission rate threshold, it may indicate that the interference of the second unlicensed frequency band is less than the interference threshold. Here, that the retransmission rate of the first unlicensed frequency band is greater than the retransmission rate threshold value may be understood as that the first interference information indicates that the interference is greater than the interference threshold. The retransmission rate of the second unlicensed frequency band being less than or equal to the retransmission rate threshold may be understood as that the second interference information indicates that the interference is less than the interference threshold. Further optionally, the retransmission rates of the first unlicensed frequency band and the second unlicensed frequency band may be obtained by counting the retransmission times of a single data packet.

Taking the snr as an example, optionally, when the snr of the first unlicensed frequency band is smaller than the snr threshold, it may indicate that the interference of the first unlicensed frequency band is larger than the interference threshold. When the signal-to-noise ratio of the second unlicensed frequency band is greater than or equal to the signal-to-noise ratio threshold, it may indicate that the interference of the second unlicensed frequency band is less than the interference threshold. Here, that the signal-to-noise ratio of the first unlicensed frequency band is smaller than the signal-to-noise ratio threshold may be understood as that the first interference information indicates that the interference is larger than the interference threshold. The signal-to-noise ratio of the second unlicensed frequency band being greater than or equal to the signal-to-noise ratio threshold may be understood as that the second interference information indicates that the interference is less than the interference threshold. Further optionally, the signal-to-noise ratios of the first unlicensed frequency band and the second unlicensed frequency band may be obtained through detection of a transmission link access code (AccessCode) and a Header (Header).

Or, optionally, the first characterizing information may specifically include: the position of the terminal device is located in the target area. Here, when the location of the terminal device is located in the target area, it may indicate that the overall interference of the first unlicensed frequency band is severe, and/or may indicate that the overall interference of the second unlicensed frequency band is small. The number of the target areas can be one or more. Alternatively, the target area may be a more people area, such as a train station, an airport, and the like. Alternatively, the target area may be statically preset or obtained by a big data analysis. Further optionally, the terminal device may dynamically update the target area.

Here, the first unlicensed frequency band may be understood as an unlicensed frequency band in which most terminal devices operate, in an area with many people, there are many terminal devices operating in the first unlicensed frequency band, and interference between the terminal devices is severe, so that when a position of the terminal device is located in a target area, it may be indicated that the overall interference of the first unlicensed frequency band is severe. The second unlicensed frequency band may be understood as an unlicensed frequency band in which a small number of devices operate, and mutual interference between terminal devices is small, so that when the terminal device is located in the target area, it may be indicated that the overall interference of the second unlicensed frequency band is small. When the terminal device is not located in the target area, it may be considered that there are few terminal devices operating in the first unlicensed frequency band, and interference between the terminal devices is small, so that it may be indicated that the overall interference of the first unlicensed frequency band is small. It can be understood that, when the location of the terminal device is not located in the target area, the control chip 31 may select the first radio frequency path 32 to communicate with the peer device.

For example, as shown in fig. 1B, if the terminal device 1 is a mobile phone supporting a bluetooth function, the terminal devices 2 and 3 are bluetooth headsets, and the user wears the terminal devices 2 and 3 and listens to music played by the terminal device 1, during a process that the user listens to the music and takes a taxi to go to a train station, communication can be performed between the terminal device 1 and the terminal devices 2 and 3 based on a first unauthorized frequency band; further, after the user arrives at the train station, for example, the terminal device 1 may select to use the second unlicensed frequency band to communicate with the terminal device 2 and the terminal device 3 according to the position of the terminal device 1 at the train station.

It should be noted that, the present application is not limited to a specific manner of acquiring the location of the terminal device. For example, the location of the terminal device may be obtained by a Global Positioning System (GPS) module. And for example, the position of the terminal device can be determined according to the WIFI access of the terminal device.

Or, optionally, the first characterizing information may specifically be that the number of devices searched by the terminal device in the first unlicensed frequency band is greater than a number threshold. Here, when the number of the devices searched by the terminal device in the first unlicensed frequency band is greater than the number threshold, it may indicate that the overall interference of the first unlicensed frequency band is severe, and/or the overall interference of the second unlicensed frequency band is small. When the number of the devices searched by the terminal device in the first unlicensed frequency band is less than or equal to the number threshold, it may be indicated that the overall interference of the first unlicensed frequency band is small.

Here, the first unlicensed frequency band may be understood as an unlicensed frequency band in which most terminal devices operate, and when the number of devices searched by the terminal device in the first unlicensed frequency band is greater than the number threshold, it may be indicated that there are many terminal devices operating in the first unlicensed frequency band and interference between the terminal devices is serious, so that it may be indicated that the overall interference of the first unlicensed frequency band is serious. The second unlicensed frequency band may be understood as an unlicensed frequency band in which a small number of devices operate, and interference between terminal devices is small, so that the overall interference of the second unlicensed frequency band may be considered to be small.

For example, as shown in fig. 1A, before the terminal device 1 establishes a communication connection with the terminal device 2, when the number of devices searched by the terminal device 1 in the first unlicensed frequency band is greater than the number threshold, it may select to use the second radio frequency channel to communicate with the terminal device 2 in the second unlicensed frequency band. For the bluetooth device, the searched device may be specifically a bluetooth device searched by a peripheral bluetooth device determined by bluetooth through scanning.

On the basis of the above scheme, the first unlicensed frequency band may be used as the unlicensed frequency band of the first priority, and the second unlicensed frequency band may be used as the unlicensed frequency band of the second priority, where the first priority is higher than the second priority. Therefore, optionally, after selecting the second radio frequency path to communicate with the peer device, the interference condition of the first unlicensed frequency band may be monitored, and when the overall interference of the first unlicensed frequency band is small, the first radio frequency path is selected to communicate with the peer device. In this embodiment of the present application, the interference condition of the first unlicensed frequency band may be used to indicate whether the overall interference of the first unlicensed frequency band is serious or small. Optionally, the method includes characterizing by interference information of a frequency point in a first unlicensed frequency band, or the number of devices searched by the terminal device in the first unlicensed frequency band, or a location where the terminal device is located. For example, when the number of devices searched by the terminal device in the first unlicensed frequency band is less than or equal to the number threshold, it may indicate that the overall interference of the first unlicensed frequency band is small; when the number of the devices searched by the terminal device in the first unlicensed frequency band is greater than the number threshold, it may indicate that the overall interference of the first unlicensed frequency band is severe.

Further, after the control chip 31 selects the second radio frequency path 33 to communicate with the peer device according to the first characterization information, the control chip 31 is further configured to: according to the second characterization information, selecting the first radio frequency path 32 to communicate with the opposite terminal device; the second characterization information is used for characterizing that the interference of the first unlicensed frequency band is smaller than the interference threshold; and communicating with the opposite terminal equipment in the first unlicensed frequency band.

It should be noted that the second characterizing information may specifically be any type of information that can indicate that the overall interference of the first unlicensed frequency band is small, and this may not be limited in this application. Optionally, similar to the first characterizing information, the second characterizing information may specifically include: interference information of a frequency point in the first unlicensed frequency band, wherein the interference information indicates that interference is smaller than an interference threshold; or the position of the terminal equipment is not located in the target area; or the number of the devices searched by the terminal device in the first unlicensed frequency band is less than or equal to a number threshold.

Optionally, after selecting the second rf path, the first rf path may be closed. Further optionally, when the first rf channel needs to be opened, the first rf path is opened. Optionally, the first radio frequency channel may be opened periodically, or the first radio frequency channel may be opened when a service between the terminal device and the peer device is suspended (for example, the service is stopped or suspended). When the interference of the frequency point in the first unlicensed frequency band needs to be obtained, or when the number of the devices searched by the terminal device in the first unlicensed frequency band needs to be obtained, the first radio frequency channel needs to be opened. Here, after the second radio frequency path is selected, the first radio frequency path is closed, so that the power consumption of the terminal device can be reduced.

For example, as shown in fig. 1B, assuming that the terminal device 1 is a mobile phone supporting a bluetooth function, the terminal device 2 and the terminal device 3 are bluetooth headsets, the terminal device 1 communicates with the terminal device 2 and the terminal device 3 based on an unlicensed frequency band of 5GHz, and the user wears the terminal device 2 and the terminal device 3 to listen to music played by the terminal device 1, then when the user pauses or stops playing the music, the terminal device 1 may open a first radio frequency path supporting the unlicensed frequency band of 2.4 GHz.

For another example, as shown in fig. 1B, after the terminal device 1 selects the second radio frequency path supporting the 5GHz unlicensed frequency band to communicate with the peer device, the first radio frequency path supporting the 2.4GHz unlicensed frequency band is opened every 10 seconds, after the first radio frequency path is opened, the interference of the frequency band in the first unlicensed frequency band may be scanned, and after the scanning is completed, the first radio frequency path is closed.

Further, it is assumed that after the first radio frequency path is opened, the terminal device 1 obtains the interference of the frequency points in the 2.4GHz unlicensed frequency band, and the interference signal intensities of a certain number of frequency points in the 2.4GHz unlicensed frequency band are all smaller than or equal to the interference threshold, which may indicate that the overall interference of the 2.4GHz unlicensed frequency band is small, so that the first radio frequency path may be selected to communicate with the terminal device 2 and the terminal device 3.

Or, optionally, after the second rf path is selected, the first rf path may not be closed. Further, when the interference of the frequency point in the first unlicensed frequency band needs to be obtained, or when the number of the devices searched by the terminal device in the first unlicensed frequency band needs to be obtained, the interference can be directly obtained through the first radio frequency channel.

It can be understood that, when the interference condition of the first unlicensed frequency band is characterized by the location of the terminal device, the interference condition of the first unlicensed frequency band can be obtained independently of the first radio frequency path. For example, as shown in fig. 1B, it is assumed that the terminal device 1 is a mobile phone supporting a bluetooth function, the terminal device 2 and the terminal device 3 are bluetooth headsets, and the user wears the terminal device 2 and the terminal device 3 at a train station and listens to music played by the terminal device 1, so that when the user stays at the train station, the terminal device 1 and the terminal device 2 and the terminal device 3 can communicate with each other based on an unlicensed frequency band of 5 GHz; further, after the user leaves the train station, the terminal device 1 may select to use the 2.4GHz unlicensed frequency band to communicate with the terminal device 2 and the terminal device 3.

Similar to selecting the second radio frequency path 33 to communicate with the peer device in the process of communicating with the peer device by using the first radio frequency path 32, it is necessary to negotiate with the peer device to switch the communication frequency band from the second unlicensed frequency band to the first unlicensed frequency band. The negotiation is similar to the above, and will not be described in detail here.

It should be noted that, the specific form of the control chip 31 is not limited in the present application, and any specific hardware form capable of implementing the functions of the control chip 31 is within the scope of protection of the control chip in the present application. Alternatively, as shown in fig. 4, the control chip 31 may include a communication protocol chip 311 and a selection circuit 312; the first rf path 32, the second rf path 33 and the communication protocol chip 311 are all electrically connected to the selection circuit 312.

The communication protocol chip 311 is configured to control the selection circuit 312 according to the first characterization information;

the selection circuit 312 is configured to select the second radio frequency path 33 to be electrically connected to the communication protocol chip according to the control of the communication protocol chip 311;

the communication protocol chip 311 is further configured to communicate with the peer device in the second unlicensed frequency band.

The communication protocol chip 311 corresponds to a communication protocol. For example, when the communication protocol chip 311 is a bluetooth protocol, the communication protocol chip may be specifically a bluetooth chip. The selection circuit 312 may be any hardware device having a selection function. For example, it may be a switch.

Specifically, the communication protocol chip 311 may control the selection circuit 312 according to the first characterization information; the selection circuit 312 can select the second rf path 33 to be electrically connected to the communication protocol chip 311 according to the control of the communication protocol chip 311; further, the communication protocol chip 311 may communicate with the peer device in the second unlicensed frequency band. It is understood that, optionally, the communication protocol chip 311 may also control the selection circuit 312 according to the second characterization information; the selection circuit 312 can select the first rf path 32 to be electrically connected to the communication protocol chip 311 according to the control of the communication protocol chip 311; further, the communication protocol chip 311 may communicate with the peer device in the second unlicensed frequency band.

The selection circuit 312 can select the first rf path 32 or the second rf path 33 to be electrically connected to the communication protocol chip 311 according to the control of the communication protocol chip 311. At this time, if the interference condition of the first unlicensed frequency band needs to be obtained in the process of electrically connecting the communication protocol chip 311 and the second radio frequency path 33, the communication protocol chip 311 may control the selection circuit 312 to select the first radio frequency path 32 to be electrically connected to the communication protocol chip 311 within a short time. Optionally, the communication protocol chip 311 may control the selection circuit 312 to select the first radio frequency path 32 to be electrically connected to the communication protocol chip 311 within a short time period periodically, so as to obtain an interference condition of the first unlicensed frequency band; alternatively, the communication protocol chip 311 may control the selection circuit 312 to select the first rf path 32 to be electrically connected to the communication protocol chip 311 within a short time in a process that the terminal device and the peer device suspend communication (for example, after the user suspends playing music, or after the previous music is played and before the next music is played, etc.), so as to obtain the interference condition of the first unlicensed frequency band.

Alternatively, the control chip 31 may include the communication protocol chip 311 instead of the selection circuit 312. Wherein, the communication protocol chip 311 may be electrically connected to the first rf path 32 and the second rf path 32, respectively. At this time, if in the process of the communication protocol chip 311 and the peer device communicating based on the second unlicensed frequency band, the interference condition of the first unlicensed frequency band may be obtained through the first radio frequency path.

It should be noted that, when the control chip 31 communicates with the peer device in the second unlicensed frequency band, the communication may be performed based on a frequency hopping technique. For example, when the terminal device and the peer device communicate based on the bluetooth technology, the adopted Frequency Hopping technology may be Adaptive Frequency Hopping (AFH).

According to the terminal device provided by the embodiment, the control chip selects to use the second radio frequency channel to communicate with the opposite terminal device in the second unlicensed frequency band according to the first characterization information for characterizing that the interference of the first unlicensed frequency band is greater than the interference threshold, and/or the interference of the second unlicensed frequency band is less than the first characterization information of the interference threshold, so that when the overall interference of the first unlicensed frequency band is serious, and/or when the overall interference of the second unlicensed frequency band is small, the second unlicensed frequency band is used to communicate with the opposite terminal device, thereby avoiding the problem that the terminal device cannot effectively select low-interference frequency points when the overall interference of the first unlicensed frequency band is serious, the terminal device communicates with the opposite terminal device in the first unlicensed frequency band by using a frequency hopping technology, and improving the reliability of communication.

Alternatively, as shown in fig. 5, the first rf path 32 may include a first rf chip, a power amplifier, and a low noise amplifier; the second radio frequency path 33 may include a second radio frequency chip, a power amplifier, and a low noise amplifier. Wherein the first rf path 32 may be electrically connected to the first antenna to form a first path; the second rf path 33 is electrically connected to the second antenna to form a second path; the first path and the second path are used for transmitting data between the terminal equipment and opposite terminal equipment; the first antenna and the second antenna may be the same antenna or different antennas.

It should be noted that, the device parameters of the Low Noise Amplifier (LNA) and the Power Amplifier (PA) included in the first radio frequency path may be the same as or different from the device parameters of the LNA and the PA included in the second radio frequency path, and the present application does not limit this.

Optionally, as shown in fig. 5, when the first antenna and the second antenna are phased array antennas, the terminal device may further include a Transmitter/Receiver (T/R) switch located in the first path and the second path, respectively, and electrically connected to the antennas in the paths. Wherein the transmitter/receiver may be referred to simply as a transceiver.

In fig. 5, the first antenna and the second antenna are taken as different antennas as an example. Alternatively, the first rf path and the second rf path may also be multiplexed antennas, i.e. the first antenna and the second antenna may be different antennas.

It should be noted that fig. 5 illustrates an example that the first rf path 32 and the second rf path 33 may use a set of rf resources respectively.

It should be noted that, in fig. 5, for example, the first rf path 32 and the second rf path 33 include different rf chips, and the first rf path 32 and the second rf path 33 may also include the same rf chip.

Fig. 6 is a schematic structural diagram of a chip for performing communication based on an unlicensed frequency band according to an embodiment of the present application. As shown in fig. 6, the chip includes: a processor 601 and an interface 602;

the interface 602 is used for receiving code instructions and transmitting the code instructions to the processor 601;

the processor 601 executes the code instructions to perform the following steps:

selecting a second radio frequency path from a first radio frequency path and a second radio frequency path to communicate with opposite terminal equipment according to the first characterization information; the first characterization information is used for characterizing that the interference of the first unlicensed frequency band is greater than an interference threshold, and/or the interference of the second unlicensed frequency band is less than the interference threshold; the first radio frequency path supports a first unlicensed frequency band, and the second radio frequency path supports a second unlicensed frequency band;

In one possible implementation, the first characterization information includes: first interference information of the frequency point in the first unlicensed frequency band, and/or second interference information of the frequency point in the second unlicensed frequency band; and when the first interference information indicates that the interference is greater than an interference threshold, the second interference information indicates that the interference is less than the interference threshold.

In a possible implementation, the first characterizing information includes that the position where the terminal device is located in a target area.

In a possible implementation, the processor 601 is configured to select the second radio frequency path to communicate with an opposite terminal device according to the first characterization information, and specifically includes:

in the process of communicating with the opposite terminal device by using the first radio frequency path, the second radio frequency path is selected to communicate with the opposite terminal device according to the first representation information and the control chip;

the processor 601 is further configured to: and negotiating with the opposite terminal equipment, and switching the communication frequency band from the first unauthorized frequency band to the second unauthorized frequency band.

In a possible implementation, the processor 601 is configured to negotiate with the peer device, and switch a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band, specifically including:

in the process of communicating with the opposite terminal equipment by using the first radio frequency path, negotiating with the opposite terminal equipment and switching to communicate with the opposite terminal equipment by using the second unlicensed frequency band at a later target moment;

the processor 601 is configured to communicate with the peer device in the second unlicensed frequency band, and specifically includes:

and communicating with the opposite terminal equipment in the second unlicensed frequency band from the target moment.

In one possible implementation, the processor 601 is further configured to:

selecting the first radio frequency channel to communicate with the opposite terminal equipment according to second characterization information; the second characterization information is used for characterizing that the interference of the first unlicensed frequency band is smaller than the interference threshold;

In a possible implementation, the processor 601 is configured to communicate with the peer device, and specifically includes:

and the opposite terminal equipment communicates by adopting a Bluetooth communication protocol.

The chip provided by this embodiment can implement the function of the control chip in the terminal device embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

Fig. 7 is a flowchart illustrating a communication method for communication based on an unlicensed frequency band according to an embodiment of the present application. The communication method can be applied to a terminal device. As shown in fig. 7, the communication method of the present embodiment may include:

and 701, selecting a second radio frequency path from the first radio frequency path and the second radio frequency path to communicate with opposite-end equipment according to the first characterization information.

Step 702, communicating with the peer device in the second unlicensed frequency band.

Optionally, the first characterizing information includes: first interference information of the frequency point in the first unlicensed frequency band, and/or second interference information of the frequency point in the second unlicensed frequency band; and when the first interference information indicates that the interference is greater than an interference threshold, the second interference information indicates that the interference is less than the interference threshold.

Further optionally, the type of the first interference information and the second interference information includes any one of the following:

interference strength indication, packet error rate, retransmission rate, or signal-to-noise ratio.

Or, optionally, the first characterization information includes that the location where the terminal device is located in a target area.

Or, optionally, the first characterization information includes that the number of devices searched by the terminal device in the first unlicensed frequency band is greater than a number threshold.

Optionally, the selecting, according to the first characterization information, the second radio frequency path to communicate with the peer device includes:

in the process of using the first radio frequency path to communicate with the opposite terminal equipment, selecting the second radio frequency path to communicate with the opposite terminal equipment according to first representation information;

the method further comprises the following steps: and negotiating with the opposite terminal equipment, and switching the communication frequency band from the first unauthorized frequency band to the second unauthorized frequency band.

Optionally, the negotiating with the peer device, and switching a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band includes:

the communicating with the peer device in the second unlicensed frequency band includes:

Optionally, after the communicating with the peer device in the second unlicensed frequency band, the method further includes:

Optionally, the first unlicensed frequency band is a 2.4 gigahertz (GHz) unlicensed frequency band, and the second frequency band is a non-2.4 GHz unlicensed frequency band.

Optionally, the second unlicensed frequency band is any one of the following: an unlicensed band of 5GHz, an unlicensed band of 60GHz, or an unlicensed band of 900 MHz.

Optionally, the communicating with the peer device includes: and the opposite terminal equipment communicates by adopting a Bluetooth communication protocol.

The communication method provided in this embodiment may be executed by the control chip in the terminal device embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 8 is a schematic structural diagram of a terminal device for performing communication based on an unlicensed frequency band according to another embodiment of the present application. As shown in fig. 8, the terminal device includes: the terminal device 100 includes components such as a Radio Frequency (RF) circuit 110, a memory 120, other Input devices 130, a display 140, a sensor 150, an audio circuit 160, an Input/Output (I/O) subsystem 170, a processor 180, and a power supply 190. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 8 does not constitute a limitation of the terminal device, and may include more or fewer components than those shown, or combine certain components, or split certain components, or a different arrangement of components. Those skilled in the art will appreciate that the display 140 belongs to a User Interface (UI) and that the terminal device 100 may include fewer or more User interfaces than shown.

The following specifically describes each constituent element of the terminal device 100 with reference to fig. 8:

the RF circuit 110 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 180; in addition, the data for designing uplink is transmitted to the base station. Typically, the RF circuit includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, the RF circuitry 110 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), email, SMS (Short Messaging Service), and the like.

The memory 120 may be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the terminal device 100 by operating the software programs and modules stored in the memory 120. The memory 120 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal device 100, and the like. Further, the memory 120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

Other input devices 130 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of terminal device 100. In particular, other input devices 130 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen), and the like. The other input devices 130 are connected to other input device controllers 171 of the I/O subsystem 170 and are in signal communication with the processor 180 under the control of the other input device controllers 171.

The display screen 140 may be used to display information input by or provided to the user and various menus of the terminal device 100, and may also accept user input. The display screen 140 may include a display panel 141 and a touch panel 142. The Display panel 141 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. The touch panel 142, also referred to as a touch screen, a touch sensitive screen, etc., may collect contact or non-contact operations (e.g., operations performed by a user on or near the touch panel 142 using any suitable object or accessory such as a finger or a stylus, and may also include body sensing operations; including single-point control operations, multi-point control operations, etc.) on or near the touch panel 142, and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 142 may include two parts, i.e., a touch detection device and a touch controller. The touch detection device detects the touch direction and gesture of a user, detects signals brought by touch operation and transmits the signals to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into information that can be processed by the processor, sends the information to the processor 180, and receives and executes a command sent by the processor 180. In addition, the touch panel 142 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, a surface acoustic wave, and the like, and the touch panel 142 may also be implemented by any technology developed in the future. Further, the touch panel 142 may cover the display panel 141, a user may operate on or near the touch panel 142 covered on the display panel 141 according to the content displayed on the display panel 141 (the display content includes, but is not limited to, a soft keyboard, a virtual mouse, virtual keys, icons, etc.), the touch panel 142 detects the operation on or near the touch panel 142, and transmits the operation to the processor 180 through the I/O subsystem 170 to determine a user input, and then the processor 180 provides a corresponding visual output on the display panel 141 through the I/O subsystem 170 according to the user input. Although in fig. 8, the touch panel 142 and the display panel 141 are two separate components to implement the input and output functions of the terminal device 100, in some embodiments, the touch panel 142 and the display panel 141 may be integrated to implement the input and output functions of the terminal device 100.

The terminal device 100 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 141 and/or the backlight when the terminal device 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of the terminal device, and related functions (such as pedometer and tapping) for vibration recognition; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the terminal device 100, detailed descriptions thereof are omitted.

The audio circuitry 160, speaker 161, and microphone 162 may provide an audio interface between the user and the terminal device 100. The audio circuit 160 may transmit the converted signal of the received audio data to the speaker 161, and convert the signal into a sound signal for output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into a signal, converts the signal into audio data after being received by the audio circuit 160, and then outputs the audio data to the RF circuit 108 to be transmitted to, for example, another terminal device, or outputs the audio data to the memory 120 for further processing.

The I/O subsystem 170 controls input and output of external devices, which may include other devices, an input controller 171, a sensor controller 172, and a display controller 173. Optionally, one or more other input control device controllers 171 receive signals from and/or transmit signals to other input devices 130, and other input devices 130 may include physical buttons (push buttons, rocker buttons, etc.), dials, slide switches, joysticks, click wheels, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen). It is noted that other input control device controllers 171 may be connected to any one or more of the above-described devices. The display controller 173 in the I/O subsystem 170 receives signals from the display screen 140 and/or sends signals to the display screen 140. After the display screen 140 detects the user input, the display controller 173 converts the detected user input into an interaction with the user interface object displayed on the display screen 140, i.e., realizes a human-machine interaction. The sensor controller 172 may receive signals from one or more sensors 150 and/or transmit signals to one or more sensors 150.

The processor 180 is a control center of the terminal device 100, connects various parts of the entire terminal device using various interfaces and lines, and performs various functions of the terminal device 100 and processes data by running or executing software programs and/or modules stored in the memory 120 and calling data stored in the memory 120, thereby performing overall monitoring of the terminal device. Alternatively, processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 180.

Terminal device 100 also includes a power supply 190 (e.g., a battery) for powering the various components, which may preferably be logically coupled to processor 180 via a power management system to manage charging, discharging, and power consumption via the power management system.

It is understood that, while the first rf path 32 and the second rf path 33 may use one set of rf resource, the terminal device 100 shown in fig. 8 may provide two sets of rf resources. The terminal device 100 may further comprise a control chip, such as a bluetooth chip, for performing the embodiment of the method shown in fig. 7.

Although not shown, the terminal apparatus 100 may further include a camera or the like, which is not described in detail herein.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A terminal device for performing communication based on an unlicensed frequency band, comprising: the device comprises a control chip, a first radio frequency channel and a second radio frequency channel; the first radio frequency path and the second radio frequency path are both electrically connected with the control chip;

the first radio frequency path supports a first unlicensed frequency band, and the second radio frequency path supports a second unlicensed frequency band;

the control chip is used for selecting the second radio frequency channel to communicate with the opposite terminal equipment according to the first characterization information; the first characterization information is used for characterizing that the interference of the first unlicensed frequency band is greater than an interference threshold, and the interference of the second unlicensed frequency band is smaller than the interference threshold;

the control chip is further configured to communicate with the peer device in the second unlicensed frequency band;

the first characterization information includes: the position of the terminal device is located in a target area, or the number of devices searched by the terminal device in the first unlicensed frequency band is greater than a number threshold.

2. The terminal device according to claim 1, wherein the control chip is configured to select the second radio frequency path to communicate with an opposite terminal device according to the first characterization information, and specifically includes:

the control chip is further configured to negotiate with the peer device, and switch a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band.

3. The terminal device according to claim 2, wherein the control chip is configured to negotiate with the peer device, and switch a communication frequency band from the first unlicensed frequency band to the second unlicensed frequency band, and specifically includes:

the control chip is configured to communicate with the peer device in the second unlicensed frequency band, and specifically includes:

4. The terminal device according to any one of claims 1 to 3, wherein the control chip is further configured to select the first radio frequency path to communicate with the peer device according to second characterization information; the second characterization information is used for characterizing that the interference of the first unlicensed frequency band is smaller than the interference threshold;

the control chip is further configured to communicate with the peer device in the first unlicensed frequency band.

5. A terminal device according to any of claims 1-3, characterized in that the control chip comprises a communication protocol chip and a selection circuit; the first radio frequency path, the second radio frequency path and the communication protocol chip are all electrically connected with the selection circuit;

the communication protocol chip is used for controlling the selection circuit according to the first characterization information;

the communication protocol chip is further configured to communicate with the peer device in the second unlicensed frequency band.

6. The terminal device according to any of claims 1-3, wherein the first unlicensed frequency band is a 2.4GHz unlicensed frequency band, and the second unlicensed frequency band is a non-2.4 GHz unlicensed frequency band.

7. The terminal device according to any one of claims 1-3, wherein the communication protocol supported by the control chip is Bluetooth.

8. A chip for communication based on an unlicensed frequency band, comprising: a processor and an interface;

the interface is used for receiving code instructions and transmitting the code instructions to the processor;

the processor executes the code instructions to perform the steps of:

selecting a second radio frequency path from a first radio frequency path and a second radio frequency path to communicate with opposite terminal equipment according to the first characterization information; the first representation information is used for representing that the interference of a first unauthorized frequency band is greater than an interference threshold, and the interference of a second unauthorized frequency band is less than the interference threshold; the first radio frequency path supports a first unlicensed frequency band, and the second radio frequency path supports a second unlicensed frequency band;

communicating with the peer device within the second unlicensed frequency band;

the first characterization information includes: the position of the terminal device is located in the target area, or the number of devices searched by the terminal device in the first unlicensed frequency band is greater than a number threshold.

9. A communication method based on unauthorized frequency band is applied to terminal equipment and is characterized by comprising the following steps:

communicating with the peer device within the second unlicensed frequency band;

10. The method of claim 9, wherein selecting the second rf path to communicate with a peer device according to the first characterization information comprises:

11. The method of claim 10, wherein the negotiating with the peer device to switch the communication band from the first unlicensed band to the second unlicensed band comprises:

12. The method according to any one of claims 9 to 11, wherein after the communicating with the peer device in the second unlicensed frequency band, further comprising: